Larry (IN):
Are you going to be,
exclusively,
JUST hunting for Caches?
If you can clarify a bit more:?

?

? The target 's size, type of metal (ferrous/nonferrous), how deep!
As you know, metal detectors are build for specific targets!
Small shallow targets, large deep targets..
And! Anything in between!
As with a
"truck", the
"truck" you buy, is the
"truck" you need!
Why buy a 1 1/2 t. flat bed, when all you haul is a few bags of...
Same with a metal detctor!
Figure out your target and then look for a detector to fit the
"NEED"!
Check with a
"serious" metal detectorist!
They will have an assortment of detectors!
Or! You might try a detector that can be used for several purposes!
IE: Changing the loops size, Can be readjusted for, etc